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Transvesical laparoendosopic single-site surgery as a valuable option to remove eroded materials from the bladder: single-center experience and a review of the literature

Abstract

Introduction

Currently, polypropylene materials are used widely for the treatment of various urogynecologic disorders. This type of treatment can be complicated, although rarely, with erosions of the polypropylene implants into the bladder or the urethra. There is no established treatment for such complications. We present our experience in transvesical laparoendoscopic single-site surgery (T-LESS) removal of eroded materials, and a review of the literature in this field.

Materials and methods

From June 2015 to May 2017 eight females, with an average age of 66.5 years (range 55–80 years), were referred to our Center because of the erosion of polypropylene material in the bladder, after anti-incontinence or pelvic organ prolapse treatment. Patients were diagnosed with ultrasound and cystoscopy. Seven bladder erosions and one bladder and urethral penetration were found. Patients were qualified for removal with the T-LESS approach. The Tri-Port + disposable set and standard laparoscopic instruments were used. The eroded materials were dissected and cut away, and the defects of the bladder wall were closed with barbed sutures. The peri-operative efficacy and safety of the method were assessed, and the patients were scheduled for follow-up visits at 6 weeks and every 3 months thereafter. The patients were offered a cystoscopic exam during the 7–10 month period after the operation.

Results

The procedures were completed successfully in all patients. No blood loss or complications were observed. The mean operative time was 54.5 min, and the average hospital stay was 30 h. During a follow-up at 11 months, all patients were cured, except for one who presented urethral erosion.

Conclusions

The T-LESS technique for removal of eroded meshes is a safe and effective method. The precise access to the bladder minimizes morbidity, and suturing the bladder wall defects may reduce the risk of recurrence.

Introduction

The use of polypropylene materials has been a standard treatment for stress urinary incontinence and pelvic organ prolapse since 1995, when Ulmsten and Petros introduced a fabric TVT tape to perform mid-urethral placement of a sling. This revolutionized urinary incontinence therapy [1]. The high success rate of mid-urethral slings encouraged surgeons to repair pelvic organ prolapse with the use of a polypropylene mesh [2].

Although the long-term results are satisfactory, these procedures are associated with various complications even as serious as intestinal perforation [3]. The other types of complications include bladder perforation, vascular injury, urinary tract infection, urinary retention, de novo detrusor over-activity, chronic pelvic pain, and mesh erosion into the vagina, urethra, or bladder [4,5,6,7,8].

The presence of the eroded materials in the bladder demands careful consideration regarding the best treatment option. The overall reported incidence of tape and mesh erosion into the bladder is low (around 0.5–0.6%) [9]. The biggest challenge among the complications is bladder erosions resulting from not following the gold standard for repair surgery, and thus the relapse of the disease. Repair operations can be performed by open or endoscopic transurethral or laparoscopic techniques. Currently, open approaches are the most commonly used methods.

Disadvantages of standard methods, either open, laparoscopic, or robotic, include relatively high morbidity, a long hospital stay and unsatisfactory cost-effectiveness [9, 10]. Therefore, a logical implication was to use other minimally invasive procedures, either transperitoneal or transvesical single-port techniques that were introduced in urology by Rane et al. and Ingber et al. in 2008–2009 [11, 12]. Here we present our clinical results in eight patients undergoing surgery using the transvesical, laparoendoscopic, single-site surgery (T-LESS) to remove surgical materials that had eroded into the bladder. The literature on the application of one-port surgery for the treatment of erosions is scarce. Therefore, we reviewed and compared the results of our group with material presented by other investigators.

Materials and methods

From June 2015 to May 2017, eight women, aged 66.5 years (range 55–80), with an average BMI of 28.4 (21.09–42.75) were referred to our Center due to bladder erosion of the polypropylene material after anti-incontinence or pelvic organ prolapse treatment (Fig. 1). One woman presented with persistent, stress urinary incontinence (SUI), and in two patients the symptoms of de novo urgency were diagnosed.

Fig. 1
figure1

Exemplary eroded tape removed from patients

Two patients underwent unsuccessful transurethral treatment. The detailed patient data are presented in Table 1. Regardless of the material, and its size and location in the bladder, all patients were qualified for surgery with a single-port technique. We chose this technique because of the Center’s experience and a significant reduction in the time of surgery relative to the standard laparoscopic technique.

Table 1 Demographic data and outcomes

The surgery began with standard cystoscopy, when we filled the bladder with 300–400 ml of saline, depending on the volume of the bladder. A 15–25 mm skin incision was made 2 cm above the pubic symphysis. In most cases, an additional incision of rectus fascia was added. The fabric single-port (Tri-Port+, Olympus, Germany) (Fig. 2a, b) was introduced through the skin incision directly to the bladder under the control of the cystoscope, with no additional bladder wall incision. Such control makes the port insertion safer, because the tip of the port is followed visually when it is inserted into the bladder (Fig. 2a, b). No specific precautions were needed. When the trocar entered the bladder, the internal ring of the Tri-Port+ was pushed down. The trocar was pulled out, and both rings of the system were matched together and fixed to the abdominal wall. The saline was evacuated, and pneumovesicum was established with carbon dioxide up to 14 mmHg. In no procedure was the vesicouretero reflux of the gas observed.

Fig. 2
figure2

Percutaneous suprapubic establishment of the Tri-Port+ device. a Introduction of the Tri-Port+ via 1.5 cm skin incision. b Blunt insertion of the port through the bladder wall

The intravesical part of the mesh with fragments that were dissected from the bladder bottom were excised and removed.

In six patients, the bladder wall defects were closed with the running stitch V-Loc (Covidien, USA) (Fig. 3a–c). The rectus sheath and skin were sutured with two stitches. Foley’s catheters were introduced transurethrally and left for 5–9 days. Antibiotic prophylaxis (fluoroquinolones and cephalosporins) was administered before and after surgery. The period of therapy depended on the active or persistent urinary tract infection, based on the results of the microbiology examination.

Fig. 3
figure3

Operative steps. a Tape traction and dissection with standard laparoscopic instruments. b Bladder wall defect closure with running stitch. c View after suturing

In all operations, transurethral access was used for a grasper or suction tube. A visual analog scale was used to assess post-operative pain. As part of the follow-up interview, abdominal ultrasonography, general examination, and urine culture were performed in 6 weeks and 6 months after surgery. Ultrasonography was used to exclude complications such as pelvic hemorrhage, hydronephrosis, and stone formation. Moreover, the patients—except for those who refused the examination—were examined with cystoscopy.

A search was performed in a PubMed base using key words “mid-urethral sling”, “transvaginal mesh”, “mesh erosion”, “bladder erosion”, “single-port laparoscopy”, and “laparoendoscopic single-site surgery” for all available literature in English, from January 2005 to March 2018. Articles were selected to fit the scope of the topic, i.e., dealing with the management of tape/mesh erosion of the bladder or urethra. A total of 27 articles were identified, among which 6 papers presented the percutaneous transvesical access.

Results

All procedures were successful, and no additional port was used. Conversion to the open method was not necessary in any of the cases. The average operation time was 54.5 min (range 23–135 min), and the average post-operative hospitalization was 30 h (range 8–96 h). Blood loss was minimal in all procedures. Patients received oral meals on the first post-operative day.

During the 6-month follow-up (range 3–10 months), there was no recurrence of erosion in the bladder, although in Patient 3 we observed an extrusion of the residual tape in the urethra. This was a consequence of an incomplete excision of the eroded calcified tape during the transurethral surgery performed before referral to our center. In this patient, the T-LESS access to the urethra was inefficient, because, after excision of the tape, we were not able to suture the opening of the urethral wall, and we only coagulated the bleeding vessels. We would like to underscore that this condition was asymptomatic and was found in the control cystoscopy.

None of the patients presented a positive urine culture in the follow-up. Moreover, symptoms like recurrent urinary incontinence or urge de novo were not observed.

The results of the literature review are presented in Table 2, and explained thoroughly in the "Discussion" section.

Table 2 Literature on suprapubic one-port mesh removal reported from January 2005 to March 2018 (N = 6)

Discussion

Urinary incontinence is a very common problem, and affects about 50% of women at some point in their lives [16]. Of the patients undergoing polypropylene tape insertion for stress urinary incontinence (SUI), 9.8% experienced a complication relative to the procedure [16]. Complications like bladder or urethral erosions are the most challenging to manage. Bladder mesh erosions present as total or partial residence of the tape or mesh in the bladder wall, usually penetrating the bladder cavity and covered by calcifications [17].

Although most authors agree that removal of eroded materials is necessary, there is no consensus as to which method is preferable [9, 18, 19]. Authors presented isolated cases of bladder erosion in small numbers of patients [4,5,6,7,8, 20], Erosions are usually removed using the open technique. This approach reduces the symptoms significantly, but is invasive, and may cause the recurrence of urinary incontinence [2, 20].

The method of transvesical laparoscopic mesh excision from the bladder was presented by Sarlos [22], who treated 7 patients, and showed that the method is effective and safe. Rouprêt et al. reported on the removal of laparoscopic eroded materials from 9 females, and showed that this method is safe and feasible, but that in some cases leads to an increased risk of recurrent incontinence. They also concluded that removal of the entire implanted material is not necessary and may not affect the continence status of the patient [18].

To remove bladder erosions, various transurethral endoscopic techniques were applied, with the use of either laser- or electrocautery. These approaches are minimally invasive, with a short hospital stay, but they are associated with a significant rate of recurrence [23, 24].

Both open and laparoscopic approaches seem to be too invasive for the removal of relatively small fragments of implanted materials. The duration of hospitalization exceeds 6 days, and in some cases complications occur [18]. Al-Badr and Fouda excised successfully the part of the TVT tape penetrating the bladder with scissors that were introduced through a laparoscopic port directly into the bladder [25]. Bekker et al. followed the technique of Al-Badr, and also cut out the eroded mesh without suturing the bladder muscle layer defects [26]. To close the bladder wall defects with sutures, Yoshizawa et al. and Kim et al. used the transvesical access for multiport (3) laparoscopy and removed the penetrating materials [13, 15].

Ingber et al. in 2009 and Roslan et al. in 2011 were the first to perform the transvesical laparoendoscopic single-site surgery to remove bladder mesh erosions [12, 27]. The series of nine patients treated by this approach was presented in 2012 by Roslan et al. [28]. The authors achieved good results, with recurrence in only one patient. The mean operative time was 59 min and the hospital stay was 2.4 days [28].

These results encouraged us to introduce this innovative technique that seemed to be attractive because of its minimal invasiveness. As we are a tertiary referral center, we had the experience of several cases with bladder erosions that we operated on with open surgery. We noticed this type of access to be too excessive compared to the real severity of the disease. Thus we decided to change the approach for excision of bladder penetrating meshes, and finally to ensure that the new transvesical single-port procedure can be a valuable and reliable option to solve problems with bladder erosions.

We therefore applied a less invasive method that enables either the removal of eroded materials or the suturing bladder wall defects.

In our patient pool, the results were similar to those presented by other authors (Tables 1, 2), although in our group the hospitalization time was shorter by a factor of 2 than in previous reports. A hospital stay of 30 h and an operative time of 54.5 min confirm the minimal invasiveness and safety of the method.

In our group, cystoscopy was performed in 6 women. Pt 2 and Pt 6 refused the examination because of lack of symptoms.

The T-LESS procedure is characterized by excellent visualization of the operating field in the bladder, and the feasibility of intravesical suturing, which is not possible to perform via transurethral access. Additional advantages are the minimal post-operative pain and the possibility of using standard laparoscopic instruments that can be inserted transurethrally, which simplifies the procedure and shortens the time of surgery. We assume that the closure of the bladder wall defect may reduce the risk of fistula formation.

Another issue is the length of time for bladder catheterization. In our group, the duration of catheter maintenance depended on the type of removed material the width of the defect of the bladder wall.

Finally, we assume that leaving the urinary catheter for 5 days is sufficient for patients with small or stitched openings in the bladder wall. In addition, the distance from the patient’s place of residence was taken into account when determining the time of catheterization.

The limitations of this work are the small number of patients and the short follow-up time. We did not have a comparison group, because the described condition is rather uncommon, and we concentrated on the applicability and safety of the T-LESS technique.

We realize that this method is still innovative and its usefulness has not been evaluated fully. Nevertheless, the approach presents the potential to decrease the invasiveness and recurrence rate of the treatment of this deteriorating condition.

Thus, only multicenter cohort results may produce more reliable results; however, our experience suggests that the T-LESS procedure may be an attractive solution to the problems of open or laparoscopic procedures.

Conclusions

Transvesical laparoendoscopic single-port removal of penetrating surgical materials from the bladder is a safe, effective, reproducible, and minimally invasive technique. This procedure offers a relatively short operative time, fast convalescence, and good cosmesis, and allows the use of either standard or sophisticated laparoscopic instruments. This method should be considered particularly when the local presentation of the foreign body is not suitable for endoscopic procedures or requires intravesical suturing. However, further studies, experience and development of new technologies are needed to facilitate the more widespread establishment of this method.

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Correspondence to Maciej Przudzik.

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Maciej Przudzik, Michał Borowik, Mirosław Łesiów, and Roman Łesiów declares that they have no conflict of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Przudzik, M., Borowik, M., Łesiów, M. et al. Transvesical laparoendosopic single-site surgery as a valuable option to remove eroded materials from the bladder: single-center experience and a review of the literature. Int Urol Nephrol 51, 247–252 (2019). https://doi.org/10.1007/s11255-018-2039-y

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Keywords

  • Urinary incontinence
  • Surgery
  • Complications
  • Laparoendoscopic single-site surgery